The 9.4 million-acre planning area encompasses most of California's western Mojave Desert. It extends from Olancha in Inyo County on the north to the San Gabriel and San Bernardino Mountains on the south, and from the Antelope Valley on the west to the Mojave National Preserve on the east. About one third of the planning area is private land, another third is within military bases, and the final third consists of public lands managed by the federal Bureau of Land Management (BLM).